Ping Tak Wu is VP at GSI TECHNOLOGY INC (GSIT). They have made 5 open-market trades across 1 company since 2017, most recently 2026-05-26.
CIK 0001394447
Unrated. We grade insiders only on stock they chose to buy on the open market. Grants, option exercises and vesting say nothing about timing, so they don't count — which is why someone can file often and still have no grade. It isn't a bad sign: unrated buys beat every graded tier below A.
0 open-market purchases, against 5 sales. Too few scored purchases to measure a record yet.
| Ticker | Shares | Value |
|---|---|---|
| GSIT | 148,441 | $473K |
Shares reported on the most recent Form 4, priced at the 2026-05-27 close.
Counted per filing, not per execution lot — a purchase filled in several tranches is one decision.
| Ticker | Type | Traded | Filed | Price | Value | 7d Stock | 30d Stock | 90d Stock |
|---|---|---|---|---|---|---|---|---|
| GSIT | SELL | 2026-05-26 | 2026-05-27 | $11.01 | $330K | -22.0% | -33.7% | -41.9% |
| GSIT | SELL | 2026-05-12 | 2026-05-14 | $10.80 | $127K | +3.8% | -18.8% | -33.1% |
| GSIT | SELL | 2021-08-26 | 2021-08-27 | $5.31 | $159K | -7.5% | -5.8% | -3.4% |
| GSIT | SELL | 2019-08-12 | 2019-08-13 | $8.04 | $143K | -0.7% | +7.4% | -7.6% |
| GSIT | SELL | 2017-02-28 | 2017-03-01 | $6.97 | $288K | +5.4% | +24.3% | +10.0% |
Grouped by shared companies and similar filing behaviour. This is a similarity measure, not a ranking or a performance signal.